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400.9×5用简便方法算

≈400/10=40

8.9乘以400用坚式计算等于多少? 8.9乘以400 =89*40 =3511

简便计算 9除于2.5除于400 9÷2.5÷400 =9÷(2.5×400) =9÷1000 =0.009.

400=44×9+4

632.5-400.9+99.6 =632.5-400+100-0.9-0.4 =332.5-1.3 =331.2

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400÷【(35+37)÷9】 =400÷(72÷9) =400÷8 =50 ======================================== 柳浪闻莺各位芝麻竭诚为您解答 您的采纳是我们坚持百度的动力 ========================================

2*999+4*99+3*9+4+5 =2*(1000-1)+4*(100-1)+27+9 =2000+400-2+36 =2434

(1)600+360÷8,=600+45,=645;(2)198÷9×5,=22×5,=110;(3)756÷6÷7,=126÷7,=18;(4)(400-196)÷6,=204÷6,=34.

18*(900-400)÷9 =18*500÷9 =18.÷9*500 =2*500 =1000 希望能帮到你

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